If you don't want others to use your photos and images without your permission, you can create a so called custom watermark with your name or any other text you want.
With the new version of Photoshop, you also get a new cropping tool called Perspective Crop Tool which will change the perspective on a image. Check it out, it really is a cool tool.
If you are mostly using only one resample image option when resizing images, then you can change the default option to the option you are using the most.
After 10 years, Adobe CS6 is the very last in the Creative Suit series as Adobe will focus entirely on the web and subscription based Creative Cloud service. Learn all about it.